Answer:
Mass = 21.24 g
Explanation:
Given data:
Number of moles of ammonia = 7.08 mol
Mass of hydrogen reacted = ?
Solution:
Chemical equation:
3H₂ + N₂ → 2NH₃
Now we will compare the moles of ammonia and hydrogen.
NH₃ : H₂
2 : 3
7.08 : 3/2×7.08 = 10.62
Mass of hydrogen:
Mass = number of moles × molar mass
Mass = 10.62 mol × 2 g/mol
Mass = 21.24 g
Answer:
5. Element J has the highest atomic number
6. Elements G and L have the same number of electrons in their outermost shell.
Explanation:
The periodic table of elements is a table which shows the arrangement of the elements in the order of increasing atomic number. Starting from the topmost left-hand side of the table where the element with the least atomic number is placed, and going across the table from left to right and down to the lowest point to the right of the table, where the element with the highest atomic number is located, the atomic number of elements progressively increases.
Looking at the table, it can be seen that the element J is found at the lowest point to the right of the table. Therefore, element J has the highest atomic atomic number.
6. In the periodic table, elements are arranged into groups and periods. The groups are the columns while the periods are the rows. Elements in the same column or group have the same number of electrons in their outermost shell. Therefore, element G and L have the same number of electrons in their outermost shell.
Its asking u when people found rocks from the moon how did the rock show the past like if u found a dinosaur bone u know have scientist said the lived 3 million years ago and how it looked
They both ask for an amount of something
Answer:
Explanation:
The mass of 2 moles of H2SO4 in gram is :
mass of one mole of H2SO4=2+32+64=98 g
So, mass of two mole is 196
